WO2022254616A1 - 油水分離装置 - Google Patents

油水分離装置 Download PDF

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Publication number
WO2022254616A1
WO2022254616A1 PCT/JP2021/021028 JP2021021028W WO2022254616A1 WO 2022254616 A1 WO2022254616 A1 WO 2022254616A1 JP 2021021028 W JP2021021028 W JP 2021021028W WO 2022254616 A1 WO2022254616 A1 WO 2022254616A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
partition plate
chamber
coolant
lubricating oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/021028
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
柳崎淳
長井修
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Corp
Original Assignee
Fuji Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Corp filed Critical Fuji Corp
Priority to PCT/JP2021/021028 priority Critical patent/WO2022254616A1/ja
Priority to US18/559,344 priority patent/US20240226772A1/en
Priority to JP2023525246A priority patent/JPWO2022254616A1/ja
Priority to DE112021007756.2T priority patent/DE112021007756T5/de
Priority to CN202180097800.8A priority patent/CN117241867A/zh
Publication of WO2022254616A1 publication Critical patent/WO2022254616A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2221/00—Applications of separation devices
    • B01D2221/14—Separation devices for workshops, car or semiconductor industry, e.g. for separating chips and other machining residues
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to an oil-water separator that efficiently separates and discharges a mixture of coolant and lubricating oil.
  • Patent Document 1 listed below discloses an oil-water separator that separates coolant and lubricating oil.
  • the oil-water separator is a separation container with a large depth dimension, and has a lubricating oil discharge port and a coolant discharge port formed on the side walls on both sides in the longitudinal direction, and a plurality of flow passage plates provided therebetween. .
  • Only one side of the plurality of channel plates is alternately joined to the side wall surfaces facing each other with a narrow width to form a water channel meandering in the longitudinal direction. Further, on the coolant discharge port side, an oil/water separation plate is provided so as to separate from the bottom surface and has a communicating portion formed at the bottom.
  • the coolant with heavy specific gravity is at the bottom of the mixed liquid, and the lubricating oil with light specific gravity floats on the liquid surface. Therefore, in the oil-water separator having the communicating portion formed at the bottom, only the coolant passes through the communicating portion, and the coolant separated from the lubricating oil is discharged from the coolant outlet side.
  • the meandering portion having a large volume separates the mixed liquid over a long period of time, so the lubricating oil accumulated on the water surface spreads to a range away from the lubricating oil discharge port. Then, the lubricating oil may stay in the oil-water separator for a long time without flowing out, and such lubricating oil will rot and emit a foul odor.
  • an object of the present invention is to provide an oil-water separator that efficiently separates and discharges oil from a mixed liquid.
  • An oil-water separator includes first and second chambers divided in a separation container, and second chambers formed in the first and second chambers on the side of the separation container, respectively.
  • FIG. 1 is a perspective view showing the internal structure of a machine tool provided with an oil-water separator of this embodiment from the rear side.
  • a machine tool 1 is configured with a movable bed 2 that can move on a base.
  • a spindle device 3 is mounted on the movable bed 2, and a spindle chuck 11 for gripping a work W is provided on the front side of the machine body on the right side of the drawing.
  • the spindle device 3 has a spindle motor 12, and the spindle chuck 11 is rotated by its rotational output.
  • the front-rear direction of the machine tool 1 is the Z-axis
  • the vertical direction is the X-axis
  • the width direction is the Y-axis.
  • a turret device equipped with a plurality of tools is positioned above the spindle chuck 11 on the front side of the fuselage.
  • the turret device is assembled with a drive device that moves the tool relative to the workpiece.
  • the machine tool 1 is a two-spindle lathe in which the machining axis of the tool, that is, the moving direction of the turret device, is set in two directions, ie, the Z-axis direction and the X-axis direction.
  • the turret device is fixed to the front end of a Z-axis slide 5 that is slidable in the Z-axis direction. It is attached to a column 7 erected on the bed 2 .
  • a vertical guide rail 13 is formed on the column 7, and the X-axis slide 6 is slidably attached to the guide rail 13.
  • the X-axis slide 6 is configured to move up and down by output of a servomotor transmitted through a ball screw mechanism.
  • a guide holder 15 is fixed to the X-axis slide 6, and the Z-axis slide 5 passed through the guide holder 15 is slidably assembled.
  • the Z-axis slide 5 is configured to move back and forth by the output of a servomotor transmitted through a ball screw mechanism.
  • the machine tool 1 uses lubricating oil so that the Z-axis slide 5 and the X-axis slide 6 can be accurately controlled.
  • the lubricating oil is supplied to a plurality of driving parts such as the sliding surfaces of the Z-axis slide 5 and the X-axis slide 6 and the bearings of the ball screw mechanism.
  • driving parts such as the sliding surfaces of the Z-axis slide 5 and the X-axis slide 6 and the bearings of the ball screw mechanism.
  • such lubricating oil will flow out from the sliding surfaces, etc., and if left as it is, it will stain the spindle device 3 and the like, and will also fall into the coolant tank provided under the movable bed 2. Therefore, the machine tool 1 is provided with an oil pan 16 above the spindle device 3 in order to collect the lubricating oil flowing down from the driving parts such as the Z-axis slide 5 .
  • the oil pan 16 is formed so that the rear side of the fuselage on the front side of the drawing becomes narrower, and is inclined so that lubricating oil and coolant gather in the discharge portion 161 at the rear end.
  • the oil pan 16 does not receive only the lubricating oil, and the coolant that is used as cooling water during the machining of the workpiece scatters from the machining chamber and mixes with it. Therefore, when the lubricating oil is to be discarded, it must be separated from the coolant.
  • FIG. 2 is an enlarged perspective view of the oil-water separator 18. As shown in FIG.
  • the oil-water separator 18 is formed by a cubic separation container 21 with an upper opening, and its interior is divided into two chambers, an oil recovery chamber 23 and a coolant recovery chamber 24 .
  • the oil-water separation device 18 is installed so that the oil recovery chamber 23 is positioned directly below the discharge portion 161, and lubricating oil and coolant directly flow into it.
  • the oil recovery chamber 23 is a chamber for collecting the lubricating oil
  • the adjacent coolant recovery chamber 24 is a chamber for storing the coolant excluding the lubricating oil.
  • a first discharge port 31 and a second discharge port 32 are formed at the same height on the side surface of the separation container 21, and sockets 41 and 42 with the same female screw are joined there. Further, a horizontally extending oil pipe 43 is connected to the socket 41, and a coolant pipe 44 is connected to the socket 42 with its direction changed downward by an elbow. As shown in FIG. 1, an oil recovery can 29 for recovering waste liquid is installed on the movable bed 2 at the tip of the oil pipe 43, and the coolant discharged from the coolant pipe 44 directed downward is It flows down to the coolant tank under the bed 2.
  • FIG. 3 and 4 are cross-sectional views showing the oil-water separator 18, and depict the separation state.
  • FIG. 5 is the cross section which showed the reference example of an oil-water separator.
  • the oil-water separator 100 shown in FIG. , 108 are formed.
  • a partition plate 105 separating the two chambers forms a communication portion 112 away from the bottom surface 111 as in the conventional example. Therefore, when the mixed liquid 70, in which the lubricating oil and the coolant are put together as indicated by the white arrow, falls into the oil recovery chamber 103, the lubricating oil 80 having a low specific gravity floats, while the coolant 90 has a high specific gravity. It enters the coolant recovery chamber 104 through the communicating portion 112 .
  • the mixed liquid 70 also penetrates the lubricating oil 80 due to the momentum of the falling into the oil recovery chamber 103 , and a part of the mixed liquid 70 passes through the communicating portion 112 and enters the coolant recovery chamber 104 .
  • Such a problem can be solved by making the separation container deeper or by increasing the distance to the discharge port, as in the conventional example, so that the mixed liquid 70 is slowly separated.
  • the purpose is to separate and discharge the lubricating oil 80 in a short period of time, the size of the separation container 101 must be reduced. Then, the mixed liquid 70 that has been introduced reaches the communicating portion 112 and enters the coolant recovery chamber 104 at a constant rate.
  • the oil-water separator 18 of the present embodiment has a configuration that allows efficient separation of the lubricating oil 80 and the coolant 90 even with such a small separation container 21 .
  • the separation container 21 is divided into the oil recovery chamber 23 and the coolant recovery chamber 24 as described above, and the partition plates thereof are composed of the upper partition plate 27 and the lower partition plate 28.
  • a communicating portion 33 is formed between the upper partition plate 27 and the lower partition plate 28, and the coolant 90 from which the lubricating oil 80 has been removed from the mixed liquid 70 that has flowed down into the oil recovery chamber 23 indicated by the white arrow.
  • the coolant is sent to the coolant recovery chamber 2 from the communicating portion 33 .
  • the lower partition plate 28 is pushed up from the bottom surface 35 and serves to prevent the liquid mixture 70 that has been introduced into the oil recovery chamber 23 and has reached the bottom surface 35 from flowing into the coolant recovery chamber 24 . Therefore, most of the lubricating oil 80 having a low specific gravity rises inside the oil recovery chamber 23 . However, a certain amount of lubricating oil 80 still flows into the coolant recovery chamber 24 as indicated by the arrow in FIG. In order to prevent the lubricating oil 80 from entering the coolant recovery chamber 24 , the upper partition plate 27 is formed with a guide portion 272 entering into the coolant recovery chamber 24 side.
  • the guiding portion 272 of the upper partition plate 27 guides the lubricating oil 80 that is about to enter the coolant recovery chamber 24 over the lower partition plate 28 to the oil recovery chamber 23 where it floats.
  • the upper partition plate 27 has a partition portion 271 extending vertically like the lower partition plate 28 at the upper portion sandwiched between the first discharge port 31 and the second discharge port 32 . is formed continuously.
  • the guide portion 272 extends to a position where its tip is lower than the upper end of the lower partition plate 28 .
  • the separation container 21 has two mounting holes 37 formed on the side opposite to the side on which the first and second discharge ports 31 and 32 are formed, and a bracket 19 joined to the bottom of the oil pan 16. can be screwed to The oil-water separator 18 is attached as shown in FIG. 1 so that the first outlet 31 and the second outlet 32 are at the same height.
  • the sockets 41 and 42 are cylindrical members having a hexagonal outer shape. Therefore, the mounting with the first discharge port 31 and the second discharge port 32 at the same height is performed by leveling the sockets 41 and 42 with a spirit level.
  • lubricating oil is supplied to drive parts during operation, and the dripping lubricating oil is received in the oil pan 16.
  • the coolant that scatters in the machining chamber also mixes into the oil pan 16.
  • - ⁇ Such lubricating oil and coolant flow over the oil pan 16 and fall out of the drain 161 as a mixture 70 into the oil-water separator 18 .
  • the lubricating oil 80 having a low specific gravity rises from the liquid mixture 70 that has fallen into the oil recovery chamber 23, but part of the lubricating oil 80 flows around to the coolant recovery chamber 24 side.
  • the lubricating oil 80 that has passed over the lower partition plate 28 rises along the slope of the guide portion 272 of the upper partition plate 27 and is collected on the liquid surface of the oil recovery chamber 23 .
  • Lubricating oil 80 exists on the liquid surface of the oil recovery chamber 23
  • coolant exists on the liquid surface of the coolant recovery chamber 24 .
  • Such lubricating oil 80 flows from the first discharge port 31 to the oil pipe 43 and is collected in the oil collection can 29 as waste liquid.
  • the coolant 90 flows down from the second discharge port 32 through the coolant pipe 44 and is accumulated in the coolant tank and reused.
  • the oil-water separator 18 of the present embodiment since the separation container 21 is divided into two chambers by the upper partition plate 27 and the lower partition plate 28, even a small separation container 21 can be lubricated.
  • the oil 80 can be prevented from entering the coolant recovery chamber 24, and the lubricating oil 80 and the coolant 90 can be efficiently separated. Since the volume of the separation container 21 is small, the lubricating oil 80 and the coolant 90 can be separated and recovered in a short time, and in particular, the lubricating oil 80 will not generate an offensive odor if left for a long time.
  • the small oil-water separator 18 can be installed in a space-saving manner, so that even a small machine tool 1 does not get in the way.
  • the upper partition plate 27 is divided into two planes of the partition portion 271 and the guide portion 272, but the upper partition plate may be formed of a single curved surface.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Floating Material (AREA)
PCT/JP2021/021028 2021-06-02 2021-06-02 油水分離装置 Ceased WO2022254616A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/JP2021/021028 WO2022254616A1 (ja) 2021-06-02 2021-06-02 油水分離装置
US18/559,344 US20240226772A1 (en) 2021-06-02 2021-06-02 Oil-water separation device
JP2023525246A JPWO2022254616A1 (https=) 2021-06-02 2021-06-02
DE112021007756.2T DE112021007756T5 (de) 2021-06-02 2021-06-02 Öl-Wasser-Trennvorrichtung
CN202180097800.8A CN117241867A (zh) 2021-06-02 2021-06-02 油水分离装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/021028 WO2022254616A1 (ja) 2021-06-02 2021-06-02 油水分離装置

Publications (1)

Publication Number Publication Date
WO2022254616A1 true WO2022254616A1 (ja) 2022-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/021028 Ceased WO2022254616A1 (ja) 2021-06-02 2021-06-02 油水分離装置

Country Status (5)

Country Link
US (1) US20240226772A1 (https=)
JP (1) JPWO2022254616A1 (https=)
CN (1) CN117241867A (https=)
DE (1) DE112021007756T5 (https=)
WO (1) WO2022254616A1 (https=)

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JPWO2022254616A1 (https=) 2022-12-08
CN117241867A (zh) 2023-12-15
DE112021007756T5 (de) 2024-04-04
US20240226772A1 (en) 2024-07-11

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